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19771 questions


1 answers
296 views
0
Understanding Application and DB Server Communication Protocols

For example, if the node.js application is running on an EC2 instance and data is exchanged with an RDS instance, what communication protocol would the EC2 instance and the RDS instance be?When develo...

1 years ago

3 answers
438 views
0
How do I describe the relative path when I write the common processing of multiple pages in a website?

Suppose you create a service with the following URL:https://example.com/hoge-service/←This is the top screenhttps://example.com/hoge-service/favoritehttps://example.com/hoge-service/user/123456User Pa...


1 answers
350 views
0
Problems with ON when creating tags that disappear when the DOJO button is pressed

The goal is to make these codes work.At this stage, there is no problem if you allow certain tags to disappear.If possible, we would like to add additional registration function to the button that dis...

1 years ago

1 answers
337 views
0
I want to know how to display annotations when using the libvips copy command to image PDFs.

What do you want to doI would like to see an annotation when I use the libvips vips copy command to image a PDF.I want to use pdfium for render.Tried CommandsInstall libvipsexport PREFIX=/usr/local/vi...

pdf
1 years ago

1 answers
347 views
0
Will RAID 1 be a backup?

Storing media files on one external 2TB hard driveI've lost data in the past due to a hard drive failure, and I wanted to back up so that I could recover even if one external hard drive failed.When I ...

1 years ago

1 answers
331 views
0
Ubuntu 22.04 does not support WQHD resolution

I am connecting my Ubuntu desktop PC to an external display. How do I set the resolution to WQHD resolution?OS:Ubuntu 22.04.01GPU $lspci | grep-invidia05:00.0 VGA compatible controller: NVIDIA Corpora...

1 years ago

3 answers
407 views
0
In the C language function printf, to omit the last 0 of the decimal point when displaying a real number

Execute the code below to get 0.100000 output.Do not want to display the 00000 that follows the end of this output.Specifically, I would like to print like 0.1.#include<stdio.h>int main() { doub...

c
1 years ago

1 answers
411 views
0
[Kotlin] Private question.

private class PP { private var i = 1 private fun privateF() { i += 1 } fun access() { privateF() }}class OC { fun test() { val pc = PP() }}Here, why is it possible to create an object witho...

1 years ago

1 answers
411 views
0
Understanding the MySQL Table Configuration of Parent-Child Hierarchy Data

What you want to do in the endI want to display the parent-child hierarchy category in PHPQAfter searching, I found [PHP][Recursive function version] that I tried to register and display categories of...

1 years ago

1 answers
306 views
0
One of Dataframe's Columns Becomes NaN

What do you want to do  I would like to set up a separate year column by extracting year from the column of the title of the data frame as follows:Problems However, if you try the code below, a warnin...

1 years ago
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